Improvement in base-burning stoves



D. efuTATLEHELn. Magazine Stove.

Patented Feb. 21. 1871.

No.y 111,951.

n.PETiRs, PuouruoGRA-PMER, wasummon, D, C

tuut Saut DENNIS G. LITTLEFIELILOF ALBANY, NEW YORK.

Letters Patent No. v111,951, dated February 21, 1871.

IMPROVEMENT IN BASE-BURNING STOVES.

'.Lhe` Schedule referred te these Letters Patent and making part of the name.

I, DENNIS GLITTLEFIELD, of the city and county of A lbany, in the State ot' New York, have invented an Improvement in Stoves, of which the following is a-specification.

The nature of my invention consists in the employment of a passage in the form of an inverted siphon, the short arm ot' which communicates withv the combustion-chamber, and extends downward to and around the base of the stove, the long arm extending thence upwardly, and terminating in the smoke-pipe.

By this arrangement a portion ot' the heated products ofthe tire is conveyed to the base of the stove, while other portions continue on their upward passage, and the intensity. of the combustion is not diminished by impair-ing the draught or by the accumulation of gases in the upper part ot' the stove, as is liable to be the case when all of the products are turned downward for the purpose of heating the base of the stove.

Figure l is a Vertical. sectional perspective of my improvement applied to a cylinder stove, and

Figure 2 is a like view cfa base-burning magazinestove, with my improvement applied, a portion of the magazine being broken away to show the long arr'n of the siphon.

As represented in the drawing- A is the outer case of the stove, which may be either a plain cylinder or a base-burning magazinestove. r

Vhen. of the latter kind, B is the magazine for fuel and G the lire-pot.

D is the s hort arnrof the inverted siphon-shaped passage, which begins a short distance above the surface ofthe nre-pot, where the combustion is most intense. This tube may -be provided with a guard tp prevent fuel accidentally' entering it, or it may be closed at the top and formed with an opening or openings on the side Inent the tire, through which the gaseous products of combustion can enter.

The course ot this Siphon-tube is downward, and preferably within the case of the stove until the base is reached, when it opens into van annular chamber, E,-s`urrounding the ash-chamber, and occupying the outer portion of the base.

This chamber is divided by an upright partition, It, at the rear.` The short arm ot the siphon enters on one side and the long arm F ou the other o f this partition, thereby necessitating the .circulation of the v,and pass into the smoke-pipe.

heated gases around the base. before they escape by the long arm. The latter rises above the fire-pot so as to be exposed to the heat at its upper extremity, and terminates by opening into the smoke-pipe G. It may be carried up as a separate pipe in the interior ofthe ease, or one side may form aportion of the case itself.

Two or more tubes or flues may be-employed to convey the heat down in place of the short arm,.or a jacket may surround the tire-pot, and receive a portion ot' the heat, which is returned to the smoke-pipe by the heated tube or passage F.

The operation is as follows:

The. plate or inet-al forming the long arm of the siphon is heated by the direct action of the fire rarefying the air within it, and causing it to move upward At the same time the heated current from the tire, on its passage to the smoke-pipe, passes parallel with and unites with the rising current from the long arm of the Siphon. These two forces produce a partial vacuum in the Siphon and annular chamber E, and the gases ot' combustion are therebydrawn into the open end of the short arm, to supply the place .of the displaced air. Thus a continuous circulation is produced, by which a heated eurrent from the fire is constantly drawn .through the siphon, filling theenlarged chamber of the base, and

heating the-lowest extremity of the stove; and this result is obtained without interfering with the direct upward draught through the fuel to the smoke-pipe, which is necessary to a suiicient supply of air, to maintain that perfect and complete combustion within the tire-pot which is shown by a clear glowing laine and white heata condition which 'cannot be maintained when allthe gaseous products of combustion are carried to the base, as it is in the ordinary revertible-uestoves.

I claim as my invention- In combination with direct-draught stoves, the employment of -aninverted siphon, the short arm of which communicates with the combustion-chamber, and the long arm with the smoke-pipe, for conveying a portion of the products of combustion to the baser, substantially as set forth.

' DENNIS G. LITTLEFIELD \Vitnesses:

NATHAN K. ELLSWORTH, A. O. RAWLInGs. 

